Pilot-light.



Patented Aug 20, |90! No. salma. y

UNITED STATES PATENT EETCE.

CHARLES D. CROCKER, OF HARTFORD, CONNECTICUT.

PILOT-LIG HT.

SPECIFICATION forming part Of Letters Patent N0. 681,018, dated August20, 1901.

Application iiled April 20, 1901. Serial No. 56,715- (No model.)

To a/ZZ whom it may concern,.-

Be it known that I, CHARLES D. CROCKER, a citizen of the United States,residing in Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inPilot-Lights, of

which the following is a specification.

My invention relates to what are known as pilot-lights, in which it isdesired to keepV a small supply of gas constantly burning,

` which will afford an iguiting-ilarne for combustible fluid employedfor heating water or for other purposes when said iiuid is turned on.Heretofore much trouble has been caused in lights of this characterbythe clogging of the openings through which the gas passes and also bythe extinguishment of the flame, due to drafts or the failure of thedevice to receive the supply, and in many of the old forms of lightsprovision has not been made for a free supply of air, and consequentlythe gas is imperfectly consumed and burns with a yellow llame.

Primarily the object` of myinvention is the provision of an improvedpilot-light of such construction that the defects above set forth' areobviated and one in which the necessary supply of air to aord perfectcombustion mayconstantlybe maintained, the result being a light burningwith a clear blue dame.

A further obj ect of the invention is the provision of a burner having achamber in which the light :may constantly be maintained, said chamberhaving ports or openings for the admission of air and other ports oropenings through which the flame passes.

A further object of the invention is the provision of a burner having achamber, a tip having lateral openings for lthe passage of gas into saidchamber, openings in the wall of the chamber for the admission of airand the passage of llame from said chamber, and a hood or hoods coveringand protecting the llame issuing from the tip.

In the accompanying drawings, Figure lis a longitudinal vertical sectionof a form of apparatus in which my improvement may be utilized.Fig.2isaplan View of theinvention. Fig. 3 is a longitudinal verticalsection on line n fr, Fig. 2. y Fig!c is an end view of the invention;and Fig. 5 is a detached plan View, partially in section, showing thelocation of the improvement with relation to the burners of theapparatus illustrated in Fig. 1.

Like numerals designate similar parts throughout the several views.

Referring to the drawings, the numeral 5 designates the casing of awater-heater in which are coils of pipe 6, through which watercirculates by main connections '7and an eduction-pipe 8. Below this coilis a series of gasburners 9, communicating withacircnlar passage-way andby connections 12 with a gassupply pipe, and in apipe of the connectionsl2 is located a valvechamber 13, containing a valve having a stem 14,which works in a stuffing-box of a cylinder 16, the construction beingsuch that when the water is turned on the valve will be operated topermit a flow of gas tothe burners 9 and when the water is turned offthe valve will drop and prevent the further admission of gas to theburners.

The construction thus far described is well known and constitutes nopart of my invention and is merely employed as illustrative of onecommon form of apparatus with which the invention may be employed.

Located adjacent to the circular row of burners 9 is my improvedpilot-light, which is designated inageneral way by the numeral 17 and iscomposed of a body 18, having a chamber 18 and laterally-projecting armsor wings 182.

Threaded into the top plate or cover is a screw 19, closing the topopening of the chamber, and threaded or otherwise seated in the body ofthe casting is atip 20, having a longitudinal perforation 20 incommunication with a passage 21 in an externally-threaded stem 22 of theburner, said stem being seated in a Xture 23 of the gasfsupply system 24and the quantity of gas supplied to said iiX- ture and pilot-lightburner being regulated by a valve 25 in a pipe 26, connected to a pipe27, in connection with the gas-supply main. (Not shown.) A valve 28 inthis pipe 27 regulates the supply of gas to the circular passageway l0,and consequent-ly the amount to beconsumed by the burners 9.

In the body 1S are openings 2.9,which serve IOC) to admit an amplesupply of air to the burner, and in the walls of the chamber 18 arediametrically-opposed openings 30 30, through which the flame from thelateral openings 202 of the tip 20 passes, said flame being protected bythe top 188 and the side Ii-ange-s 182 jectin g, covered Wings integralWith the body,

against extinguishment by drafts of air.

In the operation of my invention the pilotlight is always left burningwith a low dame, the degree of .rhich may be regulated by the valve 25,and should gas be turned on in the burners 9 by the valve 28 in pipe 27the flow of such gas to the burners Will be arrested by the valve inchamber 13; but when said valve is lifted by the piston in cylinder 16,duel to the turning on of any hot-Water faucet in the lsystem, gas willflow into circular chamber 10 and from thence into burners 9, and as itis- 'ing 'laterally-projecting covered Wings intesues from said burnerswill be immediately ignited by the flame from the constantlyburningpilot-light 17. In this Way the flame from the burners 9 quickly heatsthe Water in coil 6 and furnishes the necessary supply ofhot water tothe basin, bath-tub, or sink where the hot-water faucet is open. Afterthe i necessary supply of hot water has been obtained, by turning offthe faucet the pressure in cylinder 16 ceases and the valve thereinimmediately closes and shuts off the floW of gas to the burners. It willof course be understood that the casing 5 Will ordinarily be equippedwith doors, (not shown,) by which i accessmay be had to the interiorthereof for the purpose of igniting the pilot-light or inspecting,cleaning, o r repairing the coil 6 and burners 9, and when these doorsare open strong drafts, due to the inrush ofI air to said casing and itspassage therefrom throughl the stack or eduction-iue 40, are produced,which have had a tendency in the old styles of pilot-lights toextinguish the flame. By my improvement,- hoWever, the pilot-lightiiameis protected by the hood 183 and side plates 182 against the possibilityofextinguishmentv under ordinary conditions, and owing to the fullsupply of air through the ports or openings 29 constantly burns With aclear blue dame in readiness immediately to ignite the gas as it issuesfrom the burners 9.

While my invention is shown in a particular heating system, it isdistinctly to be undei-stood that this is merely for purposes ofillustration, for, as is obvious, it may be employed in various devicesand apparatus different from that shown Without depart-ure from thescope ofthe invention.

The invention is not limited to the precise details shown and described,for variations may be made Without departure from the scope and intentthereof.

Having thus described the invention, What I claim is- 1. Apilot-lightconsisting-of a bodyhaving a closed chamber provided'with air-inlet anddame-emission ports; a burner Within said chamber; andlaterally-projecting,` covered wings forf protecting the iiame'as itissues through the port from the burner.

2. A pilot-light consisting of a body having a central chamber providedwith air-admission and flame-emission ports, laterally-proand serving toprotect the flame; and a y burner located within the central chamber ofsaid structure.

3. A pilot-light consisting of an integrall ,projecting from thechamber, and serving to Linclose and protect the dame against the acition of drafts.

4. A pilot-light consisting-of a casting-havgral therewith, and alsohaving a central Aclosed chamber provided with portsfor the admission ofair and other ports for the paslsage of flame, and a burner Within saidcentral chamber.

5. A pilot-light consisting of a casting having a central chamber and apair of laterallyprojecting, covered Wings integral withV the castingand projecting from one side of said chamber, the Wall of saidchamber-being per- Yforated to form air-inlet and iiameoutlet ports;andv a burner Within the chamber.

6. A pilot-light consisting of a burner hav- "ing a central chamberprovided with air-adipassage of iiame; means for supplying f-nel missionports, and with an opening for the i to said chamber; laterallyprojecting side Wings flankingthe flame-passage; and a hood projectingfrom the chamber and uniting said Wings.

7. A pilot-lightconsisting-of a burner hav- F ing a central chamberhaving air and flame ports; a tip having a passage for the admission offue] to said chamber; Wings, in a passage between which the flameissues, said Win gs projecting laterally from the chamber;

and a top uniti-ng said Wings and covering said flame-passage.

' 8. The combinatiomwithgassupplymea-ns, of a pilot-light consisting ofa body having a central chamber in communication with said gas-supplymeans, said chamber havingfairadmission and flame-emission ports; a pairof covered Wings projectingv laterally from each side of the chamber;and a burner, the gas from which is ignited; by said pilot-light. 9. Apilot-light consisting of a chambered 4body provided with air-supply andflameemis'sion ports; laterally-projecting, covered Wings on andintegral With said bod-y; a tip for the supply of gas Within the chamberof the body; and a screw closing t-he top of said chamber.

CHARLES D. CROGKER.

Witnesses: l

J. L. EDWARDS, Jr., WM. H. BLODGETT.

IOO

IIO

